Diane talks with Caroline Chen, health care for ProPublica.

The country's peaceful succession of power is usually a given, but President Trump, when asked if he would accept the election results on Fox News recently, responded "we'll see." What does that mean? How do we prepare? Diane spoke with Lawrence Douglas, author of "Will He Go? Trump and the Looming Election Meltdown in 2020.”

Diane talks with Zolan Kanno-Youngs, New York Times homeland security correspondent, about who these federal agents are and why the move is sparking outrage.

Diane talks with David Roberts, energy and climate change writer at Vox.com.

From data collection to insurance coverage: how our fragmented health care system complicates the country's ability to track the spread of Covid-19. And why the Trump administration's new rule change for how hospitals report information might make it worse. Diane talks to Sarah Kliff, investigative reporter for The New York Times.

Global health expert Laurie Garrett on the United States' bungled response to the pandemic, and why she says time might be running out to contain the virus.

Diane talks to David Corn, Washington bureau chief for Mother Jones, about what this week's Supreme Court rulings mean for limits on presidential power and the fate of President Trump's tax returns.

New York Times education reporter Dana Goldstein on whether schools will reopen this fall -- and the impact on students and families if they don't.

Harvard Professor Danielle Allen on what a democratic response to the pandemic would look like, and why this country has fallen short.

Diane talks with journalist Michael Schuman, author of the new book "Superpower Interrupted: The Chinese History of The World."

Diane talks with Jamelle Bouie, New York Times opinion columnist, about the removal of Confederate statues and monuments across the South.

Constitutional law professor Kimberly Wehle joins Diane to talk about why Americans need to educate themselves about voting - especially right now. Her new book is "What You Need To Know About Voting And Why."

The New York Times chief White House correspondent, Peter Baker, has read John Bolton's new book, “The Room Where It Happened," and shares his thoughts with Diane.

Veteran political journalist John Dickerson says even before 2016, the highest office in the land was in trouble. His new book is "The Hardest Job in the World: The American Presidency."

Diane talks with Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases.

Diane talks with Marianne Edgar Budde, bishop of the Episcopal Diocese of Washington.